Description
The Watts F121408 is a 1″ LF40L-2 Lead Free Automatic Reseating Temperature and Pressure Relief Valve engineered for reliable overpressure and overtemperature protection in residential and commercial water heating systems. Designed to meet lead-free compliance requirements, this valve is a trusted solution for protecting water heaters, boilers, and hydronic systems from dangerous pressure and temperature excursions.
Key Features
- Lead-free construction for compliance with current potable water regulations
- Automatic reseating design — resets without manual intervention after a relief event
- 1″ inlet connection for straightforward installation on standard water heater and boiler ports
- Rated to 125 PSI maximum working pressure
- Temperature relief set point at 210°F for safe, code-compliant protection
- 2″ coated thermostat element for accurate temperature sensing within the tank
- Discharge line flood sensor included — provides early warning of valve discharge events to help prevent water damage
Product Specifications
- Model: LF40L-2
- SKU: F121408
- Brand: Watts
- Inlet Size: 1″
- Pressure Rating: 125 PSI
- Temperature Rating: 210°F
- Thermostat Length: 2″ (coated)
- Construction: Lead-free
- Discharge Line Flood Sensor: Included
Applications
- Residential and commercial water heaters
- Hydronic heating boilers
- Closed-loop heating systems requiring T&P protection
- Any pressurized water heating application requiring lead-free components
Why Choose the Watts LF40L-2?
Watts is a globally recognized leader in flow control and water quality products. The LF40L-2 series combines proven automatic reseating technology with lead-free materials, making it the go-to choice for contractors and engineers who demand both code compliance and long-term reliability. The included discharge line flood sensor adds an extra layer of protection by alerting building occupants or monitoring systems when the valve activates — helping to minimize water damage and reduce service callbacks.
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